Derivatives of 3-amino-2, 3-dihydrothionaphthene-1, 1-dioxide



Patented Jan. 19, 1954 DERIVATIVES OF 3-AMINO-2,3-DIHYDRO- THIONAPHTHENE-1,1-DIOXIDE John W. Cusic, Skokie,

Searle & 00., Chicago,

Ill., assignor to G. D. 111., a corporation of Illinois No Drawing. Application March 16, 1953, Serial No. 342,734

9 Claims. (Cl. 266-2411) The present invention relates to a new class of derivatives of sulfur-containing heterocycles and, more particularly, to derivatives of 3-amino- 2,3-dihydrothionaphthene-1,1-dioxide. The 2,3- dihydrothionaphthene-l,l-dioxide derivatives of this invention can be represented as the bases of the structural formula 2 ethylene chlorohydrin, propylene chlorohydrin, allyl bromide, methallyl bromide and crotyl bromide.

One of the preferred methods for the preparation of the amines of this invention consists in the condensation of thionaphthene-1,1-dioxide with an excess of a diamine of the type RR'NA-NH2 10 in the presence of an organic solvent such as a E lower alcohol, all symbols being defined as here i rf d f t' r h e compoun s o my mven ion urms metheir Salts. wherein A a lower dicinal agents useful especially in the types of radmal separating the two mtrogen atoms cardiovascular irregularities in which quinidine tached thereto by at least two carbon atoms and is indicated. The claimed compounds are valw R and R are eltper alkyl or hydmgen able intermediates in organic synthesis. Thus radicals and in WhlCh RR N can also be a mtroc 1 {on M f th t gen-containing saturated heteromonocycle atya 1 we S mm s 0 e ype tached to the hydrocarbon radical A through a nitrogen in the heteromonocycle.

This application is a continuation-in-part of 0 my copending application Serial No. 223,459, filed April 27, 1951.

In the foregoing structural formula the radiwherein Ac represents an acyl group such as cal A represents a bivalent, saturated, aliphatic hydrocarbon radical, derived from a straightchain or branched-chain hydrocarbon, which includes radicals such as ethylene, propylene, butylene, amylene, hexylene and polymethylene radicals such as trimethylene, tetramethylene, pentamethylene and hexamethylene. The radicals R and R can represent a hydrogen, methyl, ethyl, propyl, butyl, amyl, and hexyl radical wherein the propyl, butyl, amyl and hexyl radicals can be either of the straight-chain or branched-chain type. The radical RRN can also represent a nitrogen-containing saturated heteromonocycle attached to the radical A through a nitrogen in the heteromonocycle.

Radicals falling within this class are piperidine, lupetidine, pyrrolidine, morpholine, thiamorpholine, quinoline, isoquinoline, piperazine, N'-alkylpiperazine and the like.

The organic bases of the foregoing type form non-toxic salts with a variety of inorganic and strong organic acids including sulfuric, phosphoric, hydrochloric, hydrobromic, sulfamic, citric, ascorbic, and related acids.

These compounds also form non-toxic quaternary ammonium salts with a variety of organic esters of sulfuric, hydrohalic, and aromatic sulfonic acids. Among such esters are methyl chloride and bromide, ethyl chloride, propyl chloride, butyl chloride, isobutyl chloride, benzyl chloride and bromide, phenethyl bromide, naphthylmethyl chloride, dimethyl sulfate, diethyl sulfate, methyl benzenesulfonate, ethyl toluenesulfonate,

acetyl, propionyl, butyryl and other alkanoyl radicals and especially isocarbocyclanecarbonyl radicals, such as cyclopentanecarbonyl, cyclohexanecarbonyl, benzoyl, naphthoyl, fiuorenoyl, and the like. These amides are valuable as cardiovascular agents.

The claimed amines can be alkylated and aralkylated in the usual manner using alkyl halides and aralkyl halides, respectively. In this fashion compounds of the following type are obtained:

(CHa)2CH N-CHzOHz-N My invention will be described more fully in conjunction with: the followingexamples. It

' should be understood, however, that these examples are given'by way of illustration only and 3 that the invention is not to be construed as limited in spirit or in scope by the details set forth. It will be apparent to those skilled in the art that many modifications in materials and methods may be made without departing from the invention. In each of these examples temperatures are given uncorrected in degrees centigrade' (C.) and amounts of material in parts by weight.

Example 1 A mixture of 300 parts of th-ionaphthene- 1,1-dioxide, 400 parts of N,N-diethylethylenediamine and 2500 parts of ethanol is stirred and after standing for one hour, heated at'refiuxing A series of crystalline derivatives can be prepared. Thus, 200 parts of the amine can be heat- CE: CH: C 2

Other crystalline derivatives of the amine are obtained by treatment with other acyl halides, alkyl halides, and aralkyl halides. N (ii-diethylaminoethyl) N methylamino 2,3 dihydrothionaplithene--1,1dioxide"is obtained by treatment with slightly more than one molecular equivalent ofdimethyl sulfate in alkaline solution. A dimethohalide of this compound is obtained by more vigorous methylation, such as treatment with an excess of methyl iodide in a solvent such at butanone. The cation has the structural formula 43, Example 2 'A mixture of 100 parts 0f'thionaphthene1,1- dioxide and 100 parts of putrescine in 800'parts of ethanol is stirred at reflux temperature for an hour and then concentrated on the steam bath. .Ice and dilute hydrochloric acid are added and the acidic layer is separated, washed with ether and rendered alkaline by addition of dilute ammonium hydroxide. There occurs separation of an oil which is extracted with ether. The ether extract is washed with water, dried over anhydrous calcium sulfate, stirred with charcoal, filtered and evaporated yielding the 3-(6-amino- .butyDamino 2,3 thionaphthene 1,1 dioxide as an oil which decomposes when distillation is-attempted. The infrared absorption spectrum of the compound'shows maxima at about 2.82, 3.35, 7.7 and 13.7 microns. The producthas the structural formula Example 3 A stirred mixture of parts of N,N-dimethylputrescine and 60 parts of thionaphthene-1,1- dioxide in 500 parts of ethanol is heated at reflux temperature for minutes, partially concentrated on the steam bath and then treated with ice and dilute hydrochloricracid. The aqueous layer is separated, washed with ether and rendered alkaline by addition of'dilute sodium hydroxide solution. The oily base is extracted with ether and the extract is washed with water, dried over anhydrous potassium carbonate, filtered and stripped of solvent under vacuum to yield the 3 (e-dimethylaminobutyl)amino 2,3 thio naphthene 1,1 dioxide which has a yellowish oil. The infrared absorption spectrum shows maxima at about 3.35, 7.25, 7.7 and'13.-7 microns. The compound has the structural formula Example 4 A mixture of '100 parts of thionaphthene-1,1- dioxide and parts or N-(c-aminoethyD- piperidine in 800 parts of ethanol is stirred and heated at reflux temperature for 40 minutes and then concentrated on the steam bath. The resulting mixture is cooled and extracted with dilute hydrochloric-acid. The extract is washed with ether, rendered alkaline by addition of dilute sodium hydroxide and extracted with ether. This extract is dried over anhydrous sodium sulfate, filtered and freed from solvent under vacuum to yield the 3-(N-piperidinoethyl)- amino-2,3-thionaphthene-1,1-dioxide as a yellowish oil. The infrared absorption spectrum shows maxima at about 3.35 and 7.71 microns. The compound has the structural formula Amixture of 20 parts-of thionaphthene-hl 7.7 and 13.7 microns. It has the structural for- Example 6 300 parts of thionaphthene-l,l-dioxide are heated at refluxing temperature with 300 parts of N-(B-aminoethyl) morpholine in 2400 parts of ethanol for thirty minutes. The product is concentrated on the steam bath and then treated with ice and dilute hydrochloric acid. The acid layer is separated and rendered alkaline by addition of dilute potassium hydroxide solution. An oil forms which is extracted with a mixture of benzeneand ether. The extract is dried over anhydrous potassium carbonate, filtered and evaporated. Distillation of the 3- (N-morpholinoethyl) amino 2,3 dihydrothionaphthene 1,1 dioxide is inadvisable because of decomposition. The compound has the structural formula It is suitably purified by treatment of a butanone rated. The residual solid is recrystallized from ethanol. The 3'- [N- (N-morpholinoethyl) cyclohexanecarboxamidol 2,3 dihydrothionaph thene-1,1-dioxide melts at about 145-146 C'. It has the structural formula A butanone solution of '3-(N-morphclinbeth'- yl) amino 2,3 dihydrothionaphthene -'1,1- dioxide, obtained from 300 parts of thionaphthene-1,1-dioxide ashereinabove, is benzoylated by heating at refluxing temperature for 15 hours with 400 parts of benzoyl chloride in 2000 parts of butanone. The resulting solution is concentrated on "the steam bath andtreated with dilute hydrochloric acid. The acid solution is washed with ether, rendered alkaline, and extracted with a mixture of ether and benzene. The extract is dried over anhydrous potassium carbonate; filtered, and evaporated. The residual oil is stirred with charcoal in .hot' benzene solution and filtered. The filtrate is cooled and'treated with a 25% solution of hydrogen chloride in ethanol and with ether whereby a semi-solid yellow precipitate is obtained. Thelatter is decolorized in anethyl acetate-isopropanol mixture by means ofcharcoal. Upon concentration of this solution the 3-[N-morpholinoethyl)benzamido] 2,3 dihydrothionaphthene 1,1 dioxide hydrochloric precipitates which melts at about 250-251 C. It has the formula 1. A compound of the structural formula wherein A is a lower alkylene radical separating the two nitrogen atoms attached thereto by at least two carbon atoms and RRN is a member of the class consisting of morpholino, pyrrolidino and piperidino radicals and radicals wherein R and R are members of the class consisting of hydrogen and lower alkyl radicals.

2. A compound of the structural formula wherein A is a lower alkylene radical separating the two nitrogen atoms attached thereto by at least two carbon atoms.

3. 3 (B diethylaminoethybamino 2,3 dihydrothionaphthene-1,1-dioxide.

4. A compound of the structural formula wherein A is a lower alkylene radical separating the twonitrogen atoms attached thereto by at least two carbon atoms.

5. A compound of the structural formula wherein A is a lower alkylene radical separataooa rea mg the two a nitrogen atoms. attached theretmby at least two carbon atoms.

6. 3' (N morpholinoethybamino 2,3 dihydronaphthene-LIP-dioxide.

LA compound of the structural formula CH-CH2 8: wherein A is a loweralkylene radical separating the two nitrogen atoms. attached thereto by at least two carbon atoms.

9. A compound of the structural formula wherein A is a lower alkylene radical separating the two nitrogen atoms attached thereto by at least two carbon atoms.

'JOHN CUSIC.

No references cited. 

1. A COMPOUND OF THE STRUCTURAL FORMULA WHEREIN A IS A LOWEWR ALKYLENE RADICAL SEPARATING THE TWO NITROGEN ATOMS ATTACHED THERETO BY AT LEAST TWO CARBON ATOMS AND RR''N IS A MEMBER OF THE CLASS CONSISTING OF MORPHOLINO, PYRROLIDINO AND PIPERIDINO RADICALS AND RADICALS WHEREIN R AND R'' ARE MEMBERS OF THE CLASS CONSISTING OF HYDROGEN AND LOWER ALKYL RADICALS. 